Improved yoke foe gaais-eleyatobs



@uiten tetra getint Attire.

ELIZAJANE JEWELL, 0F BROOKLYN,` NEW Yoan, ADMINISTRATRIX 0F IMPROVED Youron GRAIN-summits. 4,

' 7tlg Stimuli referat to it tigris tstirts .tsirnt mit uniting mit nitigt stint.

TO `ALL-WlzIOM-.Il MAY CONCERN :v v p Be it known that THEQDORE E.JEWELL, deceased, late of Brooklyn, 'Kings county, ew York, did duringhis lifetime invent a new and improved'Yoke for'Grain-Elevators; endl,ELIZA JnNEJEWELL, of Brooklyn,

aforesaid, administratrx'ot the estate oi said Tnnononn E. JnwnLI.,dol'hereb'y' declare that the following is a 3 full, clear, and/exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being had tothe accompanying drawings,forminga partei' this specification, in which-'f Figure l'represents asectional side elevation of this improved grain-elevator. .Figure'Z isan end elevation of fthe same. i

Figure 3 is a detail horizontal sectional view of the same, the planeet'section being indicated by the line a: ze, iig. 2. i A Y I Similarletters of reference indicate corresponding parts. l This inventionrelates to a new manner of constructing and arranging the sliding yokeof a grainelevatol, 'and consists first in making the yoke of cast ironinstead of wood, as is heretoforealways done; and second, in theiuse .ofadjustable guides between the yoke and the wooden frame, whereby theyoke can be accurately fitted between the frame, so as to slide freely,and whereby inequalities arising from the expansion 'or contraetion'oi`the frame or yoke, or either, can be regulated, .i

A represents the 'stationary frame of an elevator, to be secured nearthe edge of a pier or wharf. B is the sliding yoke, suspended by meansof a rope, I, from thepper part-:of the frame A, and earryinglthe shaftC, over which the elevator-aprony D passes in a case, E, and upon whicha pulley, F, is mounted, bymeans of which it receives its motionfrom aband, G. The yoke B is made of cast iron, and the bearingsforthe shaft Cand for the friction-pulleys H H, by which the belt is stretched, aresecured to it, as is clearly shown in fig. 1. The yoke is fitted betweentwo upright posts a a of the frame A, said posts being provided withprojecting tenons 6, on their inner sides. The yoke is 'providedovith aange, e, on eachl end, said'iiange lapping over one side ofl the tenenb, (see iig. 8.) By means of bolts cl d, plates e e are secured-to theliangcs e, said platesoverlapping the other side of tenon Z7, so thatthe latter is tted between the flanges e and plates e, as shown. Thebolts d pass through lugs z', projecting from the end of the yoke.Between the lang'es e and plates e, and between two lugs z' are insertedgibs or bars j', which are held in place by the lugs di, of which one isabove and the other below each gib, as in iig. 2. The gibs f form thebearings of the yoke against the tenons 6, and can'b'e adjusted towardsor from the tenons by means of set-screws g, which pass. through theplates h, forming the edges of the yoke, as is clearlyshown in igs. 2and 3. As the tenons swell or shrink, the gibs are adjusted by means ofthe set-screws g, so as to make the yoke slide freely, without allowingthe same too much play. The gibs can be made of wood or metal, as may bedesired. The main advantage of this invention is, that when the guides fare worn, they can be removed by taking oil' the nuts d and plates e,and can then be replaced by new ones, without even taking'the yoke oit`the frame, while the yokes new in use become uselessl as soon as theedges are worn. The lugs z' may reah to the tenori if desired, but Iprefer to have them not reach the same, so that only the gibs are incontact with the tenons b. Having thus describedthe invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. Making-the yokes of grain-elevators of cast iron, constructedsubstantially as and for the purpose herein shownand described;

2. The adjustable guide arrangement at the ends et a metal yoke, whenconsisting of the 'anges c, plates e, gibs or guidesf, and set-screws g,all made and operating substantially as described, in combination withthe tenons I) on the uprights of the stationary frame A, arranged asdescribed. i

ELIZA JANE JEWELL,

Admi'm'stmzrz'x of the Estate' of T.' E. Jewell, deceased. Witnesses:

` WM. F. McNAMAnA, ALEX. F. ROBERTS.

